DE2265173A1 - Mobile road sprinkler return pressure water regulator - has pressure reduction valve membrane piston compressed by gas - Google Patents

Abstract

The regulator controls the return of pressure water to the suction side of the pump on a road sprinkler or flushing machine fitted with sprinkler nozzles. It has a pressure reduction valve, with a membrane piston opening against a closing force. Compressed gas operation of the membrane piston, is connected for common water return to the pressure regulating side of the pressure reduction valves for the individual control valves of the sprinkler nozzles. The water return pressure reduction valve may have a valve plate, with a rod connected to the membrane piston of greater diameter, with the water return connected between the opposite sides.

Description

Regulator for the jJruckwasserj- ^ ücj ^ running _ei_ne street blasting or washing machine

The invention relates to a regulator for the pressurized water return to the suction side of the pump with a spray nozzle or the like. equipped street sprinkler or -waschwagens in the form of a relieved pressure reducing valve, which can be opened more or less against a closing force with a diaphragm piston, which can be acted upon by a controllable pressure reducing valve with pressure gas variable pressure, wherein the street sprinkler or -waschwsgen with at least two explosive nozzles od. like is equipped, the respective sail valve ent-Θ1ΏΡΪ ¹

against HKx closing force can be more or less opened with a diaphragm piston, which can be acted upon by a controllable pressure reducing valve with pressurized gas of variable pressure.

One with such a cone for the pressurized water return A road blasting vehicle equipped for the suction side of the pump will be subject to the changing conditions during its work just as, for example, "when it becomes necessary to close a blasting nozzle which is then delivered too much by the pump Water is returned to the water tank and not to the Pressure increase on the water inlet side of the other opreng nozzle leads.

In a known version of this type (DT-AS 1034677), the pressurized gas is applied to the diaphragm piston of the pressure reducing valve for the only common water return according to an empirical value from Cab set off or changed by hand if necessary. This places increased demands on the operator;

609830/0322

^BA 0 original

! • "'enl schal _u un?; En y.lixü. ■.: ■:' - ■ rlicAi; .during Cier oprengfahrt emergency- • ..ejidi :; future» 7s; i <'ahrer himself.

/.ufgobe der:; r ι indung is the creation of a regulator for the pressurized water return of the type described at the beginning, in which the πufgezlichen liachteile are not available, which rather sets itself automatically.

This problem is solved according to the invention by the pressurized gas application of the diaphragm piston of the pressure reducing valve for the single common ', .asserrücklauf with the Control pressure side of the pressure reducing valves for the individual control valves of the individual spray nozzles or the like. connected is.

This connection achieved according to the invention via a The common control means causes the water return valve to close when the control pressure of the control means rises and an opening of the control valve for the spray nozzle, both in adaptation to the., water pressure. The water pressure in the control valve of the spray nozzle increases proportionally to the control pressure. The water return valve closes accordingly Control pressure until the y / water return reaches a proportional level and automatically compensates for pressure changes by opening or exclude. so the entire pipe system commutes at the beginning and the end and leaves the desired Ipreng widths more precisely, which may be different for the different explosive nozzles.

According to the invention, the control pressure side of each individual control valve for a spray nozzle is via a check valve with the tax charge of the controller for the ■. '/ Water return connected. Since all check valves open the same overpressure are set for the overflow, this has the consequence that only the strongest overpressure is used Effect on the return valve.

Deient as a pressure reducing valve for the // water return according to the invention expediently a valve plate, its valve rod is connected to a diaphragm piston, the diameter of which protrudes beyond the valve disk. Between the valve disc and The water return is connected to the central piston, to which the valve disc opens. The water pressure exerts on which the

609830/0322 bathroom original

22β5173

Yentiltellerflächenc persuasive eil rläeheiiteil ti et; .-.-. erabrnnk
an opening pressure: mis, the duroli o.ie Ge ^ enbesirf echla ^ un-: the iuembrankolbeii-i back with the .; expensivedruol · counteracted v> / ird.

An exemplary embodiment of the refinement is given in the "at lying drawing see-table shown. 1; g seigt

I ¹ Ig. 1 a ■. Tr

Pig. 2 a Gesnmt-Ieitun ^

60: Πο22 BAD Or, gi _Nal

ts.flow set si-id, ko; mat irans only use the strongest overpressure to affect the return valve. f

l5ie the control connection sv / ischen the T / asa return valve and ·., explosive device valves are inherent in Yiors of course also with others than the one described at the beginning Sprenzkorpervantil execution come into their own and are therefore not limited to this combination.

Gsiaä3 serves as the urine child valve for d ^ n ^ i / asaerrueklauf of the invention, a valve plate whose "- '" entilstange with

X _v

an I..e:.: 'or.ankolb'jn: nit is connected to the valve disc protruding diameter, -between, "whose two opposite sides of the ⁵ / a3> 3 3rrücklauf is angeach oasis, also the' / ontilteller ci'fnet. the V / aoserdruck exerts on which the Ventiltellerfläolie superior Plächent'eal of Kembrankolbena of an opening pressure, which through the ^{x-Gegenbeaufschlader} lv.3Übrankolban Ilüok3eite with the SteusVdruck

• yjjin execution example of the invention is shown schexaatically in äe2 "\ bei" in the drawing. It shows / iis · "1 oii ¹ - ^ Cr-undri.3-Soiinitt ~ Dar3teilung, y l / ;,? Μ. Ί (γ ? 3 ^! - · \ ϊι1γ — L? ItViHgs- and -

Lilt 1 is the 7> as the ice container from which the water is drawn by means of a pump 2 into the line 7> leading to the consumers. Of those in Pi ^. 2 assumed consumers 4,: ^r ; «ο i ~: i.rid in I'-ig. 1 only the envious Spro'agittfr- -f> e? » 4 VJI ^ 5 Darge ntollt from the ^ n 4 left otran & nsaite and 5 dia right 2 ^": r: sprinkle .M3cn3oit3 v.vA which therefore a mutually independent and not mutually influenced regulation of Gpreng ^ eite need while the consumer δ is a jet pipe that does not require special regulation and is therefore omitted in Fig. 1. Accordingly, a simple compressed air-actuated valve 60 is provided as the regulating element for the consumer 6, changing the regulating element 40

y V ₁

and 50, for the Sprengkäs *? ««? 4 and 5 4 * t- aj? Valve disc 7 • Wr, who from his G-ehäuse ^ ltz 8 against thea V / a-

run in the line 3 can be lifted. A piston 10 is attached to the valve disc 9ange, which, through the intermediary of a ne ^v 2bran 11 - to exclude high stuffing boxes-

609830/0322

BATH ORIGINAL

frictional forces - with a valve plate 7 outstanding Diameter a chamber 12 movably closes, which can be acted upon via a line 41 with compressed air or a compressed gas v / ground, the pressure of which by a pressure reducing valve 43 is adjustable. The valve plate rod 9 protrudes through the chamber 12 and ends in a chamber 13 »thereof a movable chamber wall equipped with a rolling membrane 14 15 is attached to the valve plate rod 9 and has approximately the diameter of the Yentil plate 7 and sur Relief of the valve bell serves in that the valve plate rod 9 has a through hole 16 through which the chamber 13 with the water inlet side of the valve disk komauniaiert, If chamber 12 does not exert any control pressure » the valve disk 7 is under the closing pressure of a supporting on the outer wall of the chamber 12 and Each 17 presses on the movable chamber wall 15 its housing seat S closed. If the control pressure is in the chamber 12 increases, it comes to the opening of the valve tellar 7j and water flows out of the ^ Sprengfee ^ e ?? 4. The one on the The water pressure acting on the inside of the valve disk also acts on the piston 10 and in this respect takes over the valve plate rod 9 a relief. The one on the water inlet side on the valve plate 7 v / irksame water pressure takes place via the valve plate rod 9 on the "movable chamber wall 15 his discharge. Bsi suddenly occurring significant pressure surges si struggled on the water inlet side, for example infolds of a necessary complete closing de; ef right-

6% ils- «.

th Sprengs 5, the mentioned relief in the chamber 13 does not come into effect so quickly because the bore 16 acts as a throttle or is prepared accordingly by installing a throttle orifice, not shown, and because an air bubble 18 is present in the chamber 13, which is used as a Eeder works. As a result, the valve plate 7 is moved towards its G-ehäusesitz 8 under such sudden strong water pressure increases; the water flow zag Spreng 4 so reduced, so that with certainty an even if only momentary increase in the spray width over the desired amount is excluded.

609830/0322

QAD ORIGINAL

'.Vas above for

~ i && 4 7ind that

valve “40 described ijSt, ^ iIt correspondingly also for Spreng 5 and da3 ■ valve 50.

ι ■ -

on plots

Regulation of Sprengwe die Druokschv / ankungei What '^

Wa33ersul £ Ui £ - "'watch the against it and lets

4trITer-3r

ugly. au end of inflow lel

^ j ^ yes

V / ao

return valve

Vas ^! Curs behind point 2 from line 3 den 3 3r on return aura container 1 is made impossible a valve disk 19, which in Pehlen a Druckmittelbeaufsohläge is brought into the closed position by a closing spring 20 on its housing 21. The valve disc 19 is nit a rod 22 to a piston 23 with Rollaenibran-Anachluß with one that towers over the valve disk E'urehiiie33er Durohaesaer connected. When water pressure occurs in the Line 3 causes this as a result of the 3 line connection3 24 between the valve plate 19 and piston 23 on the protruding part of the Kolbsnflache an opening of the valve plate 19, the only when a corresponding pressure occurs on the rear side of the Meiaban piston 23 in a chamber 25 Pressurized gas is encountered. This compressed air

5 or 61 for the jet pipe 6 - each with the interposition a check valve 42 baw. 52 or 62 causes. Your Open one of the valves 40, 50 or 60 to the consumer 4, 5 or 6 thus corresponds to a closing movement of the water return valve3 30. Your highest control pressure in each case at 41 or 51 bsw. 61 follows this closing movement. The Geaant line and switch circuit shown in Fig. 2 can still recognize the compressed air tank 27 with its long-distance line 28, which leads to the cab, where the control slide 44, 54, 64 are arranged within easy reach for the driver, the dia Supply pressure reducing valves 43, 53 through which the control pressures in the control lines 41, 51 are determined. As a result

609830/0322

ORIGINAL BATHROOM

· "7

the -above solion mentioned "waiver of an embarrassment of the jet pipe 6 can also be a "special" for this there is no need for a Bruclaninde valve. The control slide 64 dominates The Druekluftbeaufschlag via line 51 directly hegelian organ 60.

The check valves 42, 52, 62 have self-bleeding properties, ie in the Kazcier 25 the pressure ₅ prevails in each case, which has the highest pressure in one of the lines 41 ₅ 51? 61 corresponds, in other words, the chamber 25 is via line 26 through the valves 42, 52, 62 to the next lower. Pressure in one of the lines 41, 51 »61 is relieved, υιβό the highest pressure previously prevailing in one of the lines is released.

0 9 8 3 0/0322 bath

Claims (2)

Pate ntansprüche 1 J controller for the pressurized water return to the suction side of the pump with a spray nozzle or the like. equipped street blasting or -waschwagens in the form of a relieved pressure reducing valve that counteracts a closing force with a Diaphragm piston is more or less open, which one through a controllable pressure reducing valve can be acted upon with pressurized gas of variable pressure, the street blasting or -waschwagen with at least two spray nozzles or the like. is equipped, the respective control valve against a Closing force with a diaphragm piston more or less can be opened by an adjustable pressure change valve can be pressurized with pressurized gas of variable pressure, characterized in that the pressurized gas application of the Diaphragm piston (23) of the pressure reducing valve (30 or 19) for the only common water return with the control pressure side (41,51,61) of the pressure reducing valves (43,53) for the individual »control valves (40,50,60) of the individual blasting nozzles or the like. (4,5,6) is connected. 2. Regulator according to claim 1, characterized in that a valve disk is used as the pressure reducing valve (30) for the V / water return {19) is used, the valve rod (22) of which with a diaphragm piston (23) is connected to the valve disk protruding diameter, between the two opposite one another Side of the water return (at 24) is connected, towards which the valve disk (19) opens. 609830/0322 «« ORiGINAL Blank page